QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Differences between QNX4.22 and QNX4.25 |
| Ref. No. |
QNX.000004430 |
| Category(ies) |
Development, Configuration |
| Issue |
The following details some of the changes between QNX 4.22 and similar OS versions and QNX 4.25 and similiar versions.
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| Solution |
32 bit vs. 16 OPERATING SYSTEM
The biggest difference between QNX 4.22 and 4.25 is the fact that QNX 4.25 is a 32-bit OS while 4.22 is a 16-bit OS. QNX 4.25 can still run most 16 bit binaries if the 16 bit system library (slib16) is included in the boot image. If you are doing an upgrade from 4.22 to 4.25, you must make sure this is done to ensure compatiblity. Information on creating a new boot image can be found here:
http://qdn.qnx.com/support/docs/qnx4/user_guide/buildos.html
WATCOM COMPILER
The Watcom compiler version 9.52 that was distributed with 4.22 may be kept when upgrading, however we strongly recommend using version 10.6.
TCP/IP RUNTIME
The TCP/IP runtime package must be upgraded to at least 4.24.
LICENSING
With the newer OS, we introduced a new style of licenses. This style no longer requires the license utility to copy/transfer the licenses. We still recognize both styles of licenses. No modifications of the licenses will be required when upgrading. Please see the following part of our documentation for more information:
http://qdn.qnx.com/support/docs/qnx4/user_guide/license.html
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